5G Converged SDN Transport Solution Overview - Www1-realm.cisco

Solution overviewCisco publicConverged SDN Transport for 5GThe challengeService providers are facing declining or flat service margins due to cost pressures fromincreasing traffic demands and flat Average Revenue Per User (ARPU). Supporting 5Gservices requires networks to meet the stringent service requirements of 1-ms latency and1-Gbps bandwidth per user and to provide this support for billions of connected devices withan expanding threat surface.The solutionDeliver 5G services by leveraging Cisco service provider solutions to generate new revenuestreams for your business. Cisco offers a holistic solution, including xHaul transport, 5Gpacket core, and security, all under an automation umbrella that provides deep visibilityand control for service assurance. Cisco is also driving industry initiatives to help open upthe Radio Access Network (RAN) to allow service providers the flexibility to build the bestnetwork for their needs. The Converged SDN Transport solution is in the center of the 5Gtransformation and delivers the following capabilities outlined in Figure 1.Figure 1.Converged SDN Transport capabilities and benefitsWireless and ced SLAs andreduced TCOPlatform, Network,and application trustReal-time adaptationto applicationrequirementsAutonomousnetworking 2021 Cisco and/or its affiliates. All rights reserved.BenefitsGrow revenue New 5G enterprise servicesReduce cost 62% Total Cost of Ownership(TCO) savings withnetwork convergence 400% capacity increases 36% savings in upfront costsEnhance customer experience 78% faster time to service 55% reduction in meantime to repairMitigate risk Trustworthy platforms withhardware root of trust

Solution overviewCisco publicprotocol stack that eliminates protocols like theLabel Distribution Protocol (LDP) and the ResourceReservation Protocol (RSVP) TE.What if you can converge all your fixedand mobile services into a single, secure,fully automated network that can adapt inreal time to application requirements andstringent SLAs?1. Cloud RANMoving from a distributed RAN to a cloud RANcan reduce OpEx overhead at cell sites, increaseresource efficiency, and reduce overall RAN CapExspending. Cloud RAN also delivers service agilityand spectral efficiency gains. The Converged SDNTransport for 5G architecture can deliver on the tighttime-error budgets and low-latency needs of cloudRAN for the transport network with a simplifiednetwork topology and advanced traffic controls.The 5G architecturaltransitionsThe Cisco technology platforms allow you todeliver on the stringent 5G requirements and thekey 5G architectural changes defined by the ThirdGeneration Partnership Project (3GPP). Thosearchitectural changes require an evolution fromunified Multiprotocol Label Switching (MPLS) towardSegment Routing (SR) and Border Gateway ProtocolVirtual Private Network (BGP VPN) technologies withend-to-end IP. This enables wireline and wirelessnetwork convergence, enhanced Service-LevelAgreements (SLAs), resource-efficient soft networkslicing, less than 50 ms of protection against failures,scalable Traffic Engineering (TE), and a simplifiedFigure 2.2. Mobile edge compute and virtualizationAs services are located between centralized andmarket-based data centers, operators need anefficient technology tool to integrate the Wide AreaNetwork (WAN) and those data center locations.Using SR and BGP-based VPNs will ensurethat application latency, quality of service, andbandwidth requirements are met. SR MPLS and SRv6can enable seamless service chaining for virtualnetwork functions.3. Cloud-native Control and User PlaneSeparation (CUPS)A cloud-native packet core and distributed SDNarchitecture enable CUPS, allowing operators toscale control and user planes separately, as needsdictate. This eliminates complex managementand enables operators to partition the networkand position functions and services exactly whereneeded. This can enable latency-sensitive servicesand content caching to move closer to end users toensure the client experience.4. Network slicingNetwork slicing is the ability to build what lookslike discrete end-to-end networks for different 5Gservices or customers. Segment routing FlexibleAlgorithm (Flex- Algo) and a cross-domain,multivendor services orchestrator enable soft slicing,while maximizing resource efficiency. Flex-Algoprovides per-user, per-application traffic steering withrouting isolation to meet any required SLA and enduser slice visibility.Converged SDN Transport for 5G solution overview.Performance IncreaseCrosswork Network aulEthernetBusinessConnectivityNetflixHuluMEC/CRAN HubNetflixHuluRegional DCTrustworthy Infrastructure, 5G Timing Support (SyncE and PTP)Segment Routing MPLS/IPv6 2021 Cisco and/or its affiliates. All rights reserved.CoreCentralizedDCInternet

Solution overviewCisco publicConverged SDN Transport for 5G solution pillarsTo meet the requirements of 5G networks, the Cisco Converged SDN Transport solution is based on the five pillars illustrated in Figure 3.Figure 3.Five pillars of Converged SDN TransportWireless and cale,5G-Ready portfolioNetwork convergence - Convergence in access networking with oneinfrastructure to handle wireless and wireline services, protocol convergencewith SR and EVPN, and optical and IP layer convergence with Routed OpticalNetworking all offer simplification by reducing complexity and allow serviceproviders to save money by operating a single network and reduce thenumber of moving parts.Trustworthy infrastructure - Cisco products are designed from theirfoundation with security in mind. Beginning at the component level to ensurethere has been no tampering builds a foundation to deliver platform trust,network trust, and application trust. These trustworthy systems have a uniquechip called the Trust Anchor Module (TAM) built to securely store cryptographickeys in hardware, enabling capabilities like secure boot. The ability to verify andreport on the integrity of the network infrastructure allows service providers toprovide the critical infrastructure required for 5G applications.Mass-Scale, 5G-Ready portfolio - To support the demands of a 5G service,the transport network must be application/service aware, have integratedautomation tools that quickly ingest telemetry data and act upon it, andhave fronthaul-, midhaul-, and backhaul-specific features to maximizeperformance. Cisco has a full portfolio of routers and automation software tosupport your 5G service.Software-Driven simplification - Converged SDN Transport for 5G permitsprogrammability at every level. It can effectively scale service automationand orchestration by leveraging software Application Programming Interfaces 2021 Cisco and/or its affiliates. All rights automation(APIs) and standard data models with associated tools such as YANG, XML,and JSON-related SDKs. The infrastructure also supports real-time monitoringand assurance of the physical and logical network through telemetry.Cross-Domain automation - Cisco provides a suite of automation productsfor orchestration and automation within the Cisco Crosswork suite. Forexample, the Crosswork Situation Manager derives proactive insights basedon Artificial Intelligence and Machine Learning (AI/ML) algorithms and cansignificantly reduce event noise by up to 99 percent. To achieve the scalerequired by 5G, networks need to be automated to deliver service agility withoptimized operational costs, like setting up, modifying, or removing a 5Gnetwork slice in minutes or seconds.Figure 4.Cisco’s intent-based automation for proactive opvaluedbrandmachine compresslearningtimemodernize automationtransform operations

Solution overviewCisco public“Cisco NCS routingtechnology powered byautomation software runningtraffic over dark fiberoffers us an ideal blend ofinnovative technology tosupport our LTE advancedand 5G network.”- Greg O’ConnorVice President of Network Coreand Access, Sprint5G solution components5G-Ready routersWith the Cisco Network Convergence System (NCS) 500, 5500, and 5700 Series Routers, andthe Cisco ASR 9000 Series Aggregation Services Routers, Cisco has a comprehensive 5G routingportfolio designed to address indoor and outdoor cell site, aggregation, edge, and core applications forconverged mobile and wireline networks. The portfolio features industry-leading low TCO, using spaceand power-efficient platforms, leading innovation with capabilities like segment routing, and offering thehighest density in the market today.As the mobile industry and consortia continue to standardize requirements for D-RAN and C-RANLow-Level Splits (LLSs) and High-Level Splits (HLSs) under option 2, option 7, and option 8, it is clearthat the transport network is critical. To support these options, the fronthaul, midhaul, and backhaulnetworks must support strict timing synchronization and an allocation of time-error budget beyond thecurrent 3GPP requirements. Mobile operators will use multiple timing sources like GNSS or a transportnetwork-based timing solution like Synchronous Ethernet (SynchE) with Precision Timing Protocol (PTP)to help ensure phase synchronization. Cisco transport products are developed with these standards inmind and help operators build a 5G-capable xHaul network by incorporating: Class B and Class C T-BC Boundary Clock Noise Generation performance according to G.8273.2 G.8275.1 (Full on-path PTP support profile) with layer 2 Multicast encapsulation G.8275.2 (Partial on-path PTP support profile) with layer 3 Unicast encapsulation (IPv4 and IPv6) External timing ports to allow separate connections to diverse GNSS receivers as Primary ReferenceTime Clocks (PRTCs) Internal GNSS receiver support in equipment (if appropriate based upon location) Synchronous Ethernet (G.8262) and Ethernet Synchronization Message Channel (ESMC) support(G.8264) with a pathway to the new (currently draft) enhanced Synchronous Ethernet (eSynchE)